*{
    margin: 0;
    padding: 0;
}
.main{
    width: 100%;
    height: 458px;
    background: #f5f5f5;
    padding: 20px 0
}
.maincenter{
    width: 1100px;
    height: 458px;
    margin: 0px auto;
    background: #fff;
}
.maintop{
    height: 51px;
    padding: 0 20px;
    line-height: 51px;
}
.maintop h2{
    float: left;
    color: #333;
    font-size: 16px;
}
.maintop .mainbutton{
    float: right;
}
.mainbutton button{
    float: left;
    margin-top: 10px;
}
.mainbutton button:nth-of-type(1){
    margin-right: 10px;
}
.mainbottom img{
    margin: 13px 88px 0 0;
}

.xian{
    display: block;
    height: 1px;
    background: #333;
}